Online Photo Albums that sort by *filename*?

Hi everyone!

I went on a European vacation a couple months ago. I took lots of pictures with my mobile phone and a Sony P&S camera. My phone automatically switched to Central European Time (CET), but I didn't think to switch the camera to CET.

I didn't think much about it at the time, because I rarely take pictures in the exact order I'll later want to show them to family & friends. I figured I'd sort them out later by renaming them EUROPE_TRIP_2017_001.JPG, and so on.

Problem is, while both Dropbox and OneDrive support converting a folder of photos into photo albums, both default to sorting pics by EXIF date. This doesn't work for me because the EXIF data varies by several hours.

I suppose I could manually edit the EXIF data of 400+ pics, but I'd really prefer to NOT have to do that. I'm also surprised that neither Dropbox nor OneDrive offer to sort pictures by filename, since it would only take a couple lines of code. I'm also kinda shocked by some of the replies from Dropbox and OneDrive devs to community posts: apparently it never, ever crossed their minds that people might take pictures in one order, but want to display them in a different order.

Anyway, if anyone knows of an online photo album service that:

a) can sort pictures by filename;

b) makes uploads easy (I don't wanna click an "upload" button 400+ times, which was why I was trying Dropbox\OneDrive in the first place);

and c) offers captions (nice, but not required)

I'd be SUPER grateful! Thanks in advance!